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Validation of a Japanese Version of the Scoliosis Research Society-22 Patient Questionnaire Among Idiopathic Scoliosis Patients in Japan

Hashimoto, Hideki, MD, DrPH*; Sase, Takeshi, MD; Arai, Yasuhisa, MD; Maruyama, Toru, MD§; Isobe, Keijirou, MD; Shouno, Yasuhiro, MD

doi: 10.1097/01.brs.0000255220.47077.33
Health Services Research
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Study Design. A cross-sectional observational study to determine the response distribution, internal consistency, and construct, concurrent, and discriminative validities of The Scoliosis Research Society-22 (SRS-22) Patient Questionnaire translated into Japanese as compared with the other language versions.

Objective. To validate the Japanese version of SRS22.

Summary of Background Data The SRS-22 was translated into several languages but yet not into Japanese.

Methods. The Japanese SRS-22 and Medical Outcomes Study Short Form 36 were simultaneously administered to 114 adolescent idiopathic scoliosis patients.

Results. Exploratory factor analysis revealed a 4-factor structure, though several items were not loaded as theoretically expected. The originally constructed Japanese SRS-22 subscales and the English version showed similar response distribution. Internal consistency was fair but lower than that of the English version. The concurrent validity of the translated version, except for the self-image subscale, was supported using Medical Outcomes Study Short Form 36 subscales as a reference. The function scale differed significantly by curve angle magnitude and treatment status. The self-image score was the highest in patients under observation when curve angle was <40°, while postsurgical patients marked the highest scores when the angle ≥40°, respectively.

Conclusions. The Japanese SRS-22 is valid and may be useful for clinical evaluation of Japanese scoliosis patients, though the self-image subscale may need further assessment.

A Japanese version of the Scoliosis Research Society Patient Questionnaire was developed and validated in Japanese adolescent patients with idiopathic scoliosis.

From the *Department of Health Management and Policy, University of Tokyo Hospital, Tokyo; †Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo; ‡Department of Orthopaedic Surgery, Yokohama Tsurugamine Hospital, Yokohama; §Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo; ∥Isobe Orthopaedic Clinic, Chiba; and ¶Department of Orthopaedic Surgery, Hokkaido Social Insurance Hospital, Hokkaido, Japan.

Acknowledgment date: January 16, 2006. First revision date: April 18, 2006. Second revision date: June 7, 2006. Third revision date: July 31, 2006. Fourth revision date: September 22, 2006. Acceptance date: September 22, 2006.

The manuscript submitted does not contain information about medical device(s)/drug(s).

Professional Organizational funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.

Address correspondence and reprint requests to Hideki Hashimoto, MD, DrPH, Department of Health Management and Policy, University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo, 113-8655 Tokyo, Japan; E-mail: hidehashimoto-circ@umin.ac.jp

© 2007 Lippincott Williams & Wilkins, Inc.